A Two-Step Wide-Scene Polar Format Algorithm for High-Resolution Highly-Squinted SAR
Traditional polar format algorithm (PFA) is widely used in high-resolution and highly-squinted (HRHS) synthetic aperture radar (SAR) systems, because of its unique decoupling ability for any squint angle. However, the image size limit in traditional PFA, affected by the wavefront curvature, is too s...
Gespeichert in:
| Veröffentlicht in: | IEEE geoscience and remote sensing letters 2022, Vol.19, p.1-5 |
|---|---|
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 5 |
|---|---|
| container_issue | |
| container_start_page | 1 |
| container_title | IEEE geoscience and remote sensing letters |
| container_volume | 19 |
| creator | Nie, Xin Lei, Wanming Zhuang, Long |
| description | Traditional polar format algorithm (PFA) is widely used in high-resolution and highly-squinted (HRHS) synthetic aperture radar (SAR) systems, because of its unique decoupling ability for any squint angle. However, the image size limit in traditional PFA, affected by the wavefront curvature, is too small to meet the modern wide-scene requirements. To break the limit, a new two-step PFA is proposed in this letter. It uses PFA twice. The first PFA is to obtain a coarse focused big image, from which a number of subimages can be filtered out. Each subimage could be recovered to the original phase history domain and reprocessed by another modified PFA, i.e., second PFA, to get a precisely focused subimage. The final full-image can be obtained easily by mosaicking subimages together. This two-step approach is derived in detail and could obviously enlarge the valid PFA scene. It is validated by simulated and real data. |
| doi_str_mv | 10.1109/LGRS.2022.3140865 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_RIE</sourceid><recordid>TN_cdi_ieee_primary_9672128</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><ieee_id>9672128</ieee_id><sourcerecordid>2622825854</sourcerecordid><originalsourceid>FETCH-LOGICAL-c293t-5196db55aa4aaa08dd0f488d4c650a1e5d3f15e0d254815ba46d34357f0c65f3</originalsourceid><addsrcrecordid>eNo9kFFLwzAQx4MoOKcfQHwJ-JyZpLk2fSzDbcJAWQv6FrIm3Tq6Zktbxr69rRs-3R38_nfHD6FnRieM0fhtOV-lE045nwRMUBnCDRoxAEkoROx26AUQiOXPPXpomh2lXEgZjVCW4OzkSNraA_4ujSVpbmuLv1ylPZ45v9ctTqqN82W73ePCebwoN1uyso2rurZ09d9cnUl67Mq6tQanyeoR3RW6auzTtY5RNnvPpguy_Jx_TJMlyXkctARYHJo1gNZCa02lMbTovzIiD4FqZsEEBQNLDQchGay1CE0gAogK2hNFMEavl7UH746dbVq1c52v-4uKh5xLDhJET7ELlXvXNN4W6uDLvfZnxaga3KnBnRrcqau7PvNyyZTW2n8-DiPOuAx-AZPoaZI</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2622825854</pqid></control><display><type>article</type><title>A Two-Step Wide-Scene Polar Format Algorithm for High-Resolution Highly-Squinted SAR</title><source>IEEE Electronic Library (IEL)</source><creator>Nie, Xin ; Lei, Wanming ; Zhuang, Long</creator><creatorcontrib>Nie, Xin ; Lei, Wanming ; Zhuang, Long</creatorcontrib><description>Traditional polar format algorithm (PFA) is widely used in high-resolution and highly-squinted (HRHS) synthetic aperture radar (SAR) systems, because of its unique decoupling ability for any squint angle. However, the image size limit in traditional PFA, affected by the wavefront curvature, is too small to meet the modern wide-scene requirements. To break the limit, a new two-step PFA is proposed in this letter. It uses PFA twice. The first PFA is to obtain a coarse focused big image, from which a number of subimages can be filtered out. Each subimage could be recovered to the original phase history domain and reprocessed by another modified PFA, i.e., second PFA, to get a precisely focused subimage. The final full-image can be obtained easily by mosaicking subimages together. This two-step approach is derived in detail and could obviously enlarge the valid PFA scene. It is validated by simulated and real data.</description><identifier>ISSN: 1545-598X</identifier><identifier>EISSN: 1558-0571</identifier><identifier>DOI: 10.1109/LGRS.2022.3140865</identifier><identifier>CODEN: IGRSBY</identifier><language>eng</language><publisher>Piscataway: IEEE</publisher><subject>Algorithms ; Apertures ; Decoupling ; Format ; Geometry ; High resolution ; High-resolution and highly-squinted (HRHS) ; Image segmentation ; Imaging ; Information filters ; polar format algorithm (PFA) ; Radar imaging ; Resolution ; SAR (radar) ; Synthetic aperture radar ; synthetic aperture radar (SAR) ; two-step PFA ; Wave fronts ; wide-scene</subject><ispartof>IEEE geoscience and remote sensing letters, 2022, Vol.19, p.1-5</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2022</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c293t-5196db55aa4aaa08dd0f488d4c650a1e5d3f15e0d254815ba46d34357f0c65f3</citedby><cites>FETCH-LOGICAL-c293t-5196db55aa4aaa08dd0f488d4c650a1e5d3f15e0d254815ba46d34357f0c65f3</cites><orcidid>0000-0003-0176-040X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/9672128$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,4009,27902,27903,27904,54736</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/9672128$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Nie, Xin</creatorcontrib><creatorcontrib>Lei, Wanming</creatorcontrib><creatorcontrib>Zhuang, Long</creatorcontrib><title>A Two-Step Wide-Scene Polar Format Algorithm for High-Resolution Highly-Squinted SAR</title><title>IEEE geoscience and remote sensing letters</title><addtitle>LGRS</addtitle><description>Traditional polar format algorithm (PFA) is widely used in high-resolution and highly-squinted (HRHS) synthetic aperture radar (SAR) systems, because of its unique decoupling ability for any squint angle. However, the image size limit in traditional PFA, affected by the wavefront curvature, is too small to meet the modern wide-scene requirements. To break the limit, a new two-step PFA is proposed in this letter. It uses PFA twice. The first PFA is to obtain a coarse focused big image, from which a number of subimages can be filtered out. Each subimage could be recovered to the original phase history domain and reprocessed by another modified PFA, i.e., second PFA, to get a precisely focused subimage. The final full-image can be obtained easily by mosaicking subimages together. This two-step approach is derived in detail and could obviously enlarge the valid PFA scene. It is validated by simulated and real data.</description><subject>Algorithms</subject><subject>Apertures</subject><subject>Decoupling</subject><subject>Format</subject><subject>Geometry</subject><subject>High resolution</subject><subject>High-resolution and highly-squinted (HRHS)</subject><subject>Image segmentation</subject><subject>Imaging</subject><subject>Information filters</subject><subject>polar format algorithm (PFA)</subject><subject>Radar imaging</subject><subject>Resolution</subject><subject>SAR (radar)</subject><subject>Synthetic aperture radar</subject><subject>synthetic aperture radar (SAR)</subject><subject>two-step PFA</subject><subject>Wave fronts</subject><subject>wide-scene</subject><issn>1545-598X</issn><issn>1558-0571</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kFFLwzAQx4MoOKcfQHwJ-JyZpLk2fSzDbcJAWQv6FrIm3Tq6Zktbxr69rRs-3R38_nfHD6FnRieM0fhtOV-lE045nwRMUBnCDRoxAEkoROx26AUQiOXPPXpomh2lXEgZjVCW4OzkSNraA_4ujSVpbmuLv1ylPZ45v9ctTqqN82W73ePCebwoN1uyso2rurZ09d9cnUl67Mq6tQanyeoR3RW6auzTtY5RNnvPpguy_Jx_TJMlyXkctARYHJo1gNZCa02lMbTovzIiD4FqZsEEBQNLDQchGay1CE0gAogK2hNFMEavl7UH746dbVq1c52v-4uKh5xLDhJET7ELlXvXNN4W6uDLvfZnxaga3KnBnRrcqau7PvNyyZTW2n8-DiPOuAx-AZPoaZI</recordid><startdate>2022</startdate><enddate>2022</enddate><creator>Nie, Xin</creator><creator>Lei, Wanming</creator><creator>Zhuang, Long</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SC</scope><scope>7SP</scope><scope>7TG</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H8D</scope><scope>H96</scope><scope>JQ2</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><orcidid>https://orcid.org/0000-0003-0176-040X</orcidid></search><sort><creationdate>2022</creationdate><title>A Two-Step Wide-Scene Polar Format Algorithm for High-Resolution Highly-Squinted SAR</title><author>Nie, Xin ; Lei, Wanming ; Zhuang, Long</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c293t-5196db55aa4aaa08dd0f488d4c650a1e5d3f15e0d254815ba46d34357f0c65f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Algorithms</topic><topic>Apertures</topic><topic>Decoupling</topic><topic>Format</topic><topic>Geometry</topic><topic>High resolution</topic><topic>High-resolution and highly-squinted (HRHS)</topic><topic>Image segmentation</topic><topic>Imaging</topic><topic>Information filters</topic><topic>polar format algorithm (PFA)</topic><topic>Radar imaging</topic><topic>Resolution</topic><topic>SAR (radar)</topic><topic>Synthetic aperture radar</topic><topic>synthetic aperture radar (SAR)</topic><topic>two-step PFA</topic><topic>Wave fronts</topic><topic>wide-scene</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nie, Xin</creatorcontrib><creatorcontrib>Lei, Wanming</creatorcontrib><creatorcontrib>Zhuang, Long</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Computer and Information Systems Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>ProQuest Computer Science Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><jtitle>IEEE geoscience and remote sensing letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Nie, Xin</au><au>Lei, Wanming</au><au>Zhuang, Long</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Two-Step Wide-Scene Polar Format Algorithm for High-Resolution Highly-Squinted SAR</atitle><jtitle>IEEE geoscience and remote sensing letters</jtitle><stitle>LGRS</stitle><date>2022</date><risdate>2022</risdate><volume>19</volume><spage>1</spage><epage>5</epage><pages>1-5</pages><issn>1545-598X</issn><eissn>1558-0571</eissn><coden>IGRSBY</coden><abstract>Traditional polar format algorithm (PFA) is widely used in high-resolution and highly-squinted (HRHS) synthetic aperture radar (SAR) systems, because of its unique decoupling ability for any squint angle. However, the image size limit in traditional PFA, affected by the wavefront curvature, is too small to meet the modern wide-scene requirements. To break the limit, a new two-step PFA is proposed in this letter. It uses PFA twice. The first PFA is to obtain a coarse focused big image, from which a number of subimages can be filtered out. Each subimage could be recovered to the original phase history domain and reprocessed by another modified PFA, i.e., second PFA, to get a precisely focused subimage. The final full-image can be obtained easily by mosaicking subimages together. This two-step approach is derived in detail and could obviously enlarge the valid PFA scene. It is validated by simulated and real data.</abstract><cop>Piscataway</cop><pub>IEEE</pub><doi>10.1109/LGRS.2022.3140865</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0003-0176-040X</orcidid></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | ISSN: 1545-598X |
| ispartof | IEEE geoscience and remote sensing letters, 2022, Vol.19, p.1-5 |
| issn | 1545-598X 1558-0571 |
| language | eng |
| recordid | cdi_ieee_primary_9672128 |
| source | IEEE Electronic Library (IEL) |
| subjects | Algorithms Apertures Decoupling Format Geometry High resolution High-resolution and highly-squinted (HRHS) Image segmentation Imaging Information filters polar format algorithm (PFA) Radar imaging Resolution SAR (radar) Synthetic aperture radar synthetic aperture radar (SAR) two-step PFA Wave fronts wide-scene |
| title | A Two-Step Wide-Scene Polar Format Algorithm for High-Resolution Highly-Squinted SAR |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-25T19%3A16%3A54IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_RIE&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=A%20Two-Step%20Wide-Scene%20Polar%20Format%20Algorithm%20for%20High-Resolution%20Highly-Squinted%20SAR&rft.jtitle=IEEE%20geoscience%20and%20remote%20sensing%20letters&rft.au=Nie,%20Xin&rft.date=2022&rft.volume=19&rft.spage=1&rft.epage=5&rft.pages=1-5&rft.issn=1545-598X&rft.eissn=1558-0571&rft.coden=IGRSBY&rft_id=info:doi/10.1109/LGRS.2022.3140865&rft_dat=%3Cproquest_RIE%3E2622825854%3C/proquest_RIE%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2622825854&rft_id=info:pmid/&rft_ieee_id=9672128&rfr_iscdi=true |